How can cellulose and starch be modified to enhance the processability?

Please explain the difference between starch and cellulose in terms of the molecular architecture. Thanks!

03 April 2018 199 3 View

Does anyone know how to improve scratch resistance of polystyrene (PS)?

Parts both for modified and homopolymer of PS. How can I measure the scratch resistance property of PS (Non Destructive). Would appreciate any suggestion.

02 March 2018 8,367 2 View

Can someone give me some idea about the pH sensitive polymer?

Polymers which are stable or unstable depending upon the pH environment they are subjected to. The application of this material would be a layer (intermattalic layer) in some micro-system. Thank...

02 March 2018 4,814 1 View

How about Soy based poly foam?

01 February 2018 8,514 0 View

No title

01 February 2018 7,976 2 View

What do you think about a product that is made of "100% nylon coated Polyurethane"?

01 February 2018 9,982 0 View

How safe is the polyurethane in the new interior car seats from toyota and others?

I want to know if it is safe to buy. It has been on my mind as we are purchasing a car with softech or softtex.

01 February 2018 231 3 View

Have you heard of "Ryanair Pledges to Go Plastic-Free by 2023"?

01 February 2018 2,269 1 View

What temperature do you recommend using all parchment paper?

Maximum all parchment paper that is free of non-stick coatings. The parchment paper I have seen has a silicone coating. Do you know what a typical parchment paper coating is made of?. What type of...

01 February 2018 5,079 0 View

Is there any relation between phase mixing/miscibility and phase separation/immiscibility in the polymer blends?

What exactly is the main result for this? Kindly explain briefly... I have checked so many publications associated with it, however, it is difficult for me to find the exact and clear definition....

31 December 2017 266 0 View

No title

01 March 2021 3,905 5 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

How to remove the residual PDMS on the silicon mold?

Incompletely cross-linked pdms are difficult to remove.

01 March 2021 798 3 View

How to classify strictly upper triangular matrices by similarity?

Let F be a field. Consider U, the set of n times n strictly upper triangular matrices in F. For X, Y in U, we call them similar if there exists some S, which is non-degenerate and upper...

01 March 2021 2,957 8 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

How to find a correlation between coordinates in a curvilinear coordinate system?

Hello. I have a skewed elliptical coordinate system (I use alternative elliptical coordinates). And I need to determine connections between coordinates in order to fetch a covariance matrix of...

28 February 2021 364 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View